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Finding the Fourth Proportional to 210,772.66, 316,175.50 and 61,015.20

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Solution

The fourth proportional to 210,772.66, 316,175.50 and 61,015.20 is: 91,527.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,772.66 : 316,175.50 = 61,015.20 : x
  2. Step 2: Convert to fraction form
    210,772.66/316,175.50 = 61,015.20/x
  3. Step 3: Cross multiply
    210,772.66x = 316,175.50 × 61,015.20
  4. Step 4: Simplify right side
    210,772.66x = 19,291,511,367.60
  5. Step 5: Solve for x
    x = 19,291,511,367.60/210,772.66
  6. Step 6: Final answer
    x = 91,527.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.